how do you set flags in cgminner? im used to using gui miner and switched from bitclockers to here
The easiest way is from the command line.
The more complex but fine tunning way is by config file. Start cgminer up from command line using just -o (pool), -u (username), -p (pass) parameters.
Once cgminer loads press S for settings and then W for write config file. You can leave it blank (it will make default named cgminer.conf). Then open up the config file it will be set to defaults for your hardware and you can customize from there. cgminer may make invalid config file entries for things like voltage, either delete those lines or set them to what you want.
Lots more info here:
https://raw.github.com/ckolivas/cgminer/master/READMEFor p2pool you want to lower intensity (I found 1 notch lower to be good start), queue = 1, and threads per gpu =1.